Paint spraying device for inner wall of petrochemical pipeline

Abstract

The utility model discloses a petrochemical engineering pipeline inner wall paint spraying device which comprises an inclined supporting plate, a rotary spraying mechanism and a supporting adjusting mechanism, the supporting adjusting mechanism is hinged to the bottom of the supporting plate, the rotary spraying mechanism is arranged on the upper portion of the supporting plate, and the rotary spraying mechanism comprises a first rotary motor, a supporting column and a spraying assembly. The first rotating motor is arranged on the upper end face of the supporting plate, the supporting column is connected to the output end of the first rotating motor, the spraying assembly is connected to the end, away from the first rotating motor, of the supporting column and rotates along with the first rotating motor to form an annular spraying operation area, and the supporting adjusting mechanism moves on the pipeline to spray paint on the inner wall of the pipeline. The utility model belongs to the technical field of paint spraying equipment, and particularly relates to a paint spraying device for the inner wall of a petrochemical pipeline, which is convenient for adjusting the inclination angle of a rotary spraying mechanism, enables paint sprayed by a spray head to be sprayed out along with an air duct, increases the spraying uniformity, increases the coverage area of a paint surface and annularly sprays paint on the inner wall of the pipeline.

Description

Technical Field

[0001] The utility model belongs to the technical field of paint spraying equipment, in particular to a paint spraying device for the inner wall of a petrochemical pipeline. Background Art

[0002] In pipelines used in petrochemical industry, since most of the substances they transport are corrosive, they are easy to corrode the pipelines, causing more rust inside the pipelines, which affects the service life of the pipelines. Therefore, it is necessary to protect the pipelines by spraying paint on the inner walls of the pipelines.

[0003] As the existing pipeline inner wall painting device moves along the axial direction of the pipeline, paint is sprayed through the nozzle, and the painting area spreads in a fan shape. Generally, multiple groups of nozzles are arranged to paint the pipe wall to increase the painting range. However, the paint sprayed from adjacent nozzles overlaps, making the paint thickness of the pipeline inner wall uneven, increasing the friction of the pipeline inner wall, and causing the paint to fall off in the overlapping area. Utility Model Content

[0004] The technical problem to be solved by the utility model is that the paint surface thickness of the inner wall of the pipeline is uneven, which increases the friction of the inner wall of the pipeline and causes the paint surface to fall off in the overlapping area.

[0005] The technical solution adopted by the utility model is as follows: a paint spraying device for the inner wall of a petrochemical pipeline, comprising a support plate arranged obliquely, a rotating spraying mechanism and a support adjustment mechanism, wherein the support adjustment mechanism is hingedly arranged at the bottom of the support plate, and the rotating spraying mechanism is arranged at the upper part of the support plate;

[0006] The support adjustment mechanism includes a bottom plate, a moving wheel and a pull rod, one end of the bottom plate is hinged to the bottom wall of the support plate, the pull rod is hinged to the upper part of the outer side wall of the support plate, the moving wheel is rotatably connected to the two outer side walls of the bottom plate, and the moving wheels are symmetrically arranged in pairs.

[0007] The rotating spraying mechanism includes a rotating motor, a support column and a spraying assembly. The rotating motor is arranged on the upper end surface of the support plate, the support column is connected to the output end of the rotating motor, and the spraying assembly is connected to the end of the support column away from the rotating motor. As the rotating motor rotates, a ring-shaped spraying operation area is formed, and the support adjustment mechanism is used to move in the pipeline to achieve painting on the inner wall of the pipeline.

[0008] Furthermore, the spray assembly includes a storage cylinder, a protective cover, a centrifugal pump, a diverter box and a pressure cylinder. The storage cylinder is fixedly connected to one end of the support column away from the rotating motor, the centrifugal pump is arranged on the outer wall of the pressure cylinder away from the support column, the water pumping end of the centrifugal pump is connected to the interior of the storage cylinder, the diverter box is arranged at the water outlet end of the centrifugal pump, the protective cover is arranged on the outer wall of the storage cylinder and extends toward the two end surfaces of the storage cylinder, and the pressure cylinder is arranged at the inner center of both ends of the protective cover.

[0009] Furthermore, the inner side walls at both ends of the protective cover are provided with fixing rods, the fixing rods are arranged in a ring shape with equal spacing, the other ends of the fixing rods arranged in a ring shape with equal spacing are connected to a connecting plate, and one end of the pressure cylinder is fixedly connected to the connecting plate.

[0010] Furthermore, a fixing ring is provided between the storage tube and the connecting plate, the fixing ring is located inside the protective cover, and a supporting rod is connected between the outer wall of the fixing ring and the inner wall of the protective cover.

[0011] Furthermore, a rotating motor 2 is installed on the inner side wall of the fixed ring, and the output end of the rotating motor 2 can be rotatably connected to the end center of the connecting plate. The output end side wall of the rotating motor 2 is provided with fan blades, and the fan blades are arranged in a ring shape with equal spacing.

[0012] Furthermore, an air duct is formed between the fixing rods arranged in an annular manner with equal intervals and the inner wall of the protective cover.

[0013] Furthermore, the end of the pressure cylinder away from the connecting plate is arranged in a truncated cone shape, and the hypotenuse side wall of the pressure cylinder away from the connecting plate is connected to a nozzle, and the nozzles are arranged in a ring shape or at equal intervals, and a connecting pipe is connected between the pressure cylinder and the diversion box.

[0014] Furthermore, a cylinder is provided in the middle of the upper part of the bottom plate, and the telescopic end of the cylinder is in contact with the support plate.

[0015] After adopting the above structure, the utility model has the following beneficial effects: the utility model proposes a paint spraying device for the inner wall of a petrochemical pipeline, which drives the rotating spraying mechanism to move through a movable support adjustment mechanism. During the movement, the rotating spraying mechanism rotates on the upper part of the support plate, and the paint is sprayed from both ends of the rotating spraying mechanism to produce an annular spray, and the inner wall of the pipeline is sprayed with paint. The angle between the support plate and the bottom plate is adjusted by using a cylinder to change the inclination angle of the rotating spraying mechanism;

[0016] When the rotating spraying mechanism rotates, the centrifugal pump draws the paint in the storage cylinder, pumps it into the pressure cylinders at both ends, and sprays it out through the nozzle. The rotating motor drives the fan blades to supply air to the two end surfaces of the protective cover, so that the paint sprayed from the nozzle is sprayed out along the air duct, forming a circular spraying area, increasing the spraying uniformity, and improving the coverage area of ​​the paint surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0018] Figure 1This is a schematic diagram of the overall structure of a paint spraying device for the inner wall of a petrochemical pipeline proposed by the utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of a paint spraying device for the inner wall of a petrochemical pipeline proposed by the utility model;

[0020] Figure 3 This is a schematic diagram of the air duct structure of a paint spraying device for the inner wall of a petrochemical pipeline proposed by the utility model;

[0021] Figure 4 This is a half-section view of a paint spraying device for the inner wall of a petrochemical pipeline proposed by the utility model;

[0022] Figure 5 for Figure 4 A magnified view of part A.

[0023] In the attached drawings: 1. support plate, 2. rotating spraying mechanism, 3. supporting and adjusting mechanism, 4. bottom plate, 5. moving wheel, 6. pull rod, 7. rotating motor 1, 8. support column, 9. spraying assembly, 10. storage cylinder, 11. protective cover, 12. centrifugal pump, 13. diverter box, 14. pressure cylinder, 15. fixing rod, 16. connecting plate, 17. fixing ring, 18. support rod, 19. rotating motor 2, 20. fan blade, 21. air duct, 22. nozzle, 23. connecting pipe, 24. cylinder. DETAILED DESCRIPTION

[0024] like Figure 1 As shown, a paint spraying device for the inner wall of a petrochemical pipeline comprises an inclined support plate 1, a rotating spraying mechanism 2 and a support adjustment mechanism 3. The support adjustment mechanism 3 is hingedly arranged at the bottom of the support plate 1, and the rotating spraying mechanism 2 is arranged at the upper part of the support plate 1. The rotating spraying mechanism 2 is connected to the upper part of the support plate 1 to form a ring-shaped paint spraying working surface through self-rotation. The support adjustment mechanism 3 supports the support plate 1 to adjust the angle of the support plate 1, and at the same time drives the support plate 1 and the upper rotating spraying mechanism 2 to move.

[0025] In order to realize the self-rotation of the rotating spraying mechanism 2, the rotating spraying mechanism 2 includes a rotating motor 7, a support column 8 and a spraying assembly 9. The rotating motor 7 is arranged on the upper end surface of the support plate 1, the support column 8 is connected to the output end of the rotating motor 7, and the spraying assembly 9 is connected to the end of the support column 8 away from the rotating motor 7. As the rotating motor 7 rotates, a ring-shaped spraying operation area is formed. The support adjustment mechanism 3 is used to move the pipeline to realize painting on the inner wall of the pipeline. The rotating motor 7 is fixed on the upper part of the support plate 1. When the output end of the rotating motor 7 rotates, it drives the connecting column to rotate, so that the spraying assembly 9 rotates with the output end of the rotating motor 7 as the center.

[0026] like Figure 2-5As shown, in order to increase the painting effect, push the sprayed paint, expand the spraying operation surface, and increase the uniformity of painting on the inner wall of the pipeline, the spray assembly 9 includes a storage cylinder 10, a protective cover 11, a centrifugal pump 12, a diverter box 13 and a pressure cylinder 14. The storage cylinder 10 is fixedly connected to the end of the support column 8 away from the rotating motor 7, the centrifugal pump 12 is arranged on the outer wall of the pressure cylinder 14 away from the support column 8, the water pumping end of the centrifugal pump 12 is connected to the inside of the storage cylinder 10, the diverter box 13 is arranged at the water outlet end of the centrifugal pump 12, the protective cover 11 is arranged on the outer wall of the storage cylinder 10 and extends toward the two end faces of the storage cylinder 10, and the pressure cylinder 14 is arranged at the inner center of the two ends of the protective cover 11. The centrifugal pump 12 pumps the paint inside the storage cylinder 10 into the diverter box 13, and then pumps it into the pressure cylinder 14 through the connecting pipe 23. The end of the pressure cylinder 14 away from the connecting plate 16 is arranged in a truncated cone shape, and the hypotenuse side wall of the pressure cylinder 14 at the end away from the connecting plate 16 is connected with a nozzle 22. The nozzles 22 are arranged in a ring shape or at equal intervals. A connecting pipe 23 is connected between the pressure cylinder 14 and the diverter box 13, and finally the paint is sprayed out by the nozzle 22. The sprayed paint is sprayed at both ends of the protective cover 11. When the support column 8 rotates, the paint sprayed from both ends is sprayed in a ring shape.

[0027] like Figure 2 and Figure 3 As shown, the inner side walls at both ends of the protective cover 11 are provided with fixing rods 15, and the fixing rods 15 are arranged in a circular shape with equal spacing. The other ends of the fixing rods 15 arranged in a circular shape with equal spacing are connected to a connecting plate 16, and one end of the pressure cylinder 14 is fixedly connected to the connecting plate 16 for supporting and connecting the pressure cylinder 14. A fixing ring 17 is provided between the storage cylinder 10 and the connecting plate 16, and the fixing ring 17 is located inside the protective cover 11. A supporting rod 18 is connected between the outer side wall of the fixing ring 17 and the inner wall of the protective cover 11 to support the fixing ring 17. A rotating motor 19 is installed on the inner side wall of the fixing ring 17. The rotating motor 19 is kept at the center of both ends of the protective cover 11. The output end of the rotating motor 19 can be rotatably connected to the center of the end face of the connecting plate 16. The side wall of the output end of the rotating motor 19 is provided with fan blades 20. The fan blades 20 are arranged in a circular shape with equal spacing. An air duct 21 is formed between the fixing rods 15 arranged in a circular shape with equal spacing and the inner wall of the protective cover 11. The rotating motor 19 drives the fan blades 20 to rotate, so that the inside of the protective cover 11 is pushed to flow air from the middle to both ends. When the nozzle 22 sprays paint, the paint is blown out and diffused, thereby increasing the paint spraying area and the paint spraying uniformity.

[0028] like Figure 1 and Figure 2As shown, in order to facilitate the operator to move the traction device, the support and adjustment mechanism 3 includes a base plate 4, a moving wheel 5 and a pull rod 6. One end of the base plate 4 is hinged to the bottom wall of the support plate 1, and the pull rod 6 is hinged to the upper part of the outer wall of the support plate 1. The moving wheels 5 are rotatably connected to the two outer walls of the base plate 4. The moving wheels 5 are symmetrically arranged in pairs. A cylinder 24 is provided in the middle of the upper part of the base plate 4. The telescopic end of the cylinder 24 is in contact with the support plate 1. The telescopic end of the cylinder 24 is telescopically adjusted and contacts the inclined bottom wall of the support plate 1 to support the support plate 1, thereby realizing the angle adjustment of the rotating spraying mechanism 2.

[0029] When in use, paint is injected into the storage tube 10. When moving, the operator pulls the pull rod 6 to drive the device to move in the pipeline. The operator drives the cylinder 24 to adjust the extension and contraction, so that the extension end of the cylinder 24 slides and contacts the bottom wall of the support plate 1, and adjusts the angle of the inclined support plate 1;

[0030] When spraying paint, the rotary motor 7 is driven to rotate, the support column 8 connected to the spray assembly 9 rotates, and the centrifugal pump 12 pumps the paint in the storage cylinder 10 into the diversion box 13, and then pumps it into the pressure cylinder 14 through the connecting pipe 23, and finally sprays it out from the nozzle 22;

[0031] The rotating motor 19 drives the fan blades 20 to rotate, so that gas is ejected from the middle to both ends of the protective cover 11. The gas sprays the paint through the air duct 21, expands the spraying area of ​​the paint, disperses the sprayed paint, and evenly falls on the inner wall of the pipe, thereby increasing the uniformity of the paint spraying.

[0032] Although the embodiments of the utility model have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the utility model, and the scope of the utility model is defined by the attached claims and their equivalents. In short, if those skilled in the art are inspired by them and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the scope of protection of the utility model.

Claims

1. A paint spraying device for the inner wall of a petrochemical pipeline, comprising an inclined support plate, characterized in that: It also includes a rotating spraying mechanism and a supporting and adjusting mechanism, wherein the supporting and adjusting mechanism is hingedly arranged at the bottom of the supporting plate, and the rotating spraying mechanism is arranged at the upper part of the supporting plate; The support adjustment mechanism includes a bottom plate, a moving wheel and a pull rod, one end of the bottom plate is hinged to the bottom wall of the support plate, the pull rod is hinged to the upper part of the outer side wall of the support plate, the moving wheel is rotatably connected to the two outer side walls of the bottom plate, and the moving wheels are symmetrically arranged in pairs; The rotating spraying mechanism includes a rotating motor, a support column and a spraying assembly. The rotating motor is arranged on the upper end surface of the support plate, the support column is connected to the output end of the rotating motor, and the spraying assembly is connected to the end of the support column away from the rotating motor. As the rotating motor rotates, a ring-shaped spraying operation area is formed, and the support adjustment mechanism is used to move in the pipeline to achieve painting on the inner wall of the pipeline.

2. A paint spraying device for the inner wall of a petrochemical pipeline according to claim 1, characterized in that: The spray assembly includes a storage cylinder, a protective cover, a centrifugal pump, a diverter box and a pressure cylinder. The storage cylinder is fixedly connected to one end of the support column away from the rotating motor. The centrifugal pump is arranged on the outer wall of the pressure cylinder away from the support column. The water pumping end of the centrifugal pump is connected to the inside of the storage cylinder. The diverter box is arranged at the water outlet end of the centrifugal pump. The protective cover is arranged on the outer wall of the storage cylinder and extends toward the two end surfaces of the storage cylinder. The pressure cylinder is arranged at the inner center of both ends of the protective cover.

3. A paint spraying device for the inner wall of a petrochemical pipeline according to claim 2, characterized in that: The inner side walls at both ends of the protective cover are provided with fixing rods, and the fixing rods are arranged in a circular shape with equal spacing. The other ends of the fixing rods arranged in a circular shape with equal spacing are connected to connecting plates, and one end of the pressure cylinder is fixedly connected to the connecting plate.

4. A paint spraying device for the inner wall of a petrochemical pipeline according to claim 3, characterized in that: A fixing ring is provided between the storage tube and the connecting plate, the fixing ring is located inside the protective cover, and a supporting rod is connected between the outer wall of the fixing ring and the inner wall of the protective cover.

5. The paint spraying device for the inner wall of a petrochemical pipeline according to claim 4, characterized in that: The inner side wall of the fixed ring is installed with a rotating motor 2, the output end of the rotating motor 2 is rotatably connected to the end face center of the connecting plate, and the side wall of the output end of the rotating motor 2 is provided with fan blades, which are arranged in a ring shape with equal spacing.

6. A paint spraying device for the inner wall of a petrochemical pipeline according to claim 5, characterized in that: An air duct is formed between the fixing rods arranged at equal intervals in a ring shape and the inner wall of the protective cover.

7. A paint spraying device for the inner wall of a petrochemical pipeline according to claim 6, characterized in that: The end of the pressure cylinder away from the connecting plate is arranged in a truncated cone shape, and the hypotenuse side wall of the pressure cylinder away from the connecting plate is connected with a nozzle, and the nozzles are arranged in a ring shape or at equal intervals. A connecting pipe is connected between the pressure cylinder and the diversion box.

8. A paint spraying device for the inner wall of a petrochemical pipeline according to claim 7, characterized in that: A cylinder is arranged in the middle of the upper part of the bottom plate, and the telescopic end of the cylinder contacts the supporting plate.

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